Southern California -- this just in

The National Weather Service has issued a high surf advisory for beaches in Ventura and Los Angeles counties from Tuesday evening through Wednesday evening.

Large waves and dangerous rip currents also are forecast for San Diego County, where a hazardous weather outlook was issued Monday afternoon by the weather service.

A powerful storm in the Southern Hemisphere is expected to generate waves from 6 to 8 feet high on south-facing beaches, with waves up to 10 feet at point breaks and jetties in Los Angeles and Ventura counties, according to the weather service.

The large waves will combine with tides of about 6 feet around 10 or 11 p.m., which will be caused by a full moon. "The combined effect of high surf and high tide may cause minor tidal overflow during the times of high tide," the agency said.

Swimmers are also advised to take precautions because of dangerous rip currents that may result from the large breakers.